Massachusetts does not have a legal definition for fulltime or parttime employees. Use it to develop a personnel policy and as a resource to answer questions on employment law issues.Handbook for employers: instructions for completing the form I9, US Dept. Of Homeland Security. Discover your rights and your employer's duties under Massachusetts Labor Law with this comprehensive guide. Here's the Massachusetts employee handbook requirements, which include the required and optional policies. All workers have the right to: â–« A safe workplace. â–« Raise a safety or health concern with your employer or OSHA, or report a work-. An uptodate guide on Massachusetts labor laws. This state-specific guide covers labor and employment case law, statutes, rules, and regulations that HR professionals and clients often encounter